No real news about BK. Thus far he has alluded my trapping attempts. Meanwhile his limp seems to be less defined, not sure what that means. He doesn't appear to be suffering at the moment, so I haven't felt as much urgency to get him immediate medical care. Although, I do still intend to capture him and get him tested, neutered and looked over.
I have been researching drop traps, and I feel better about using this method of trapping. I like the idea of the freaked-out cat thrashing around in soft-netting rather than into unforgiving metal walls. So, I'm working on procuring the parts to construct me one. Finding suitable netting appears to be a challenge, but I'm working on it.